Mental Math: Addition
252+44
What is 296?
468-224
What is 244?
81 rounded to the nearest 10
What is 80?
19+13=13+19
What is the Commutative Property?
The sides of a rectangle are 4ft and 3ft, so the area is ?
What is 12 square feet?
236+243
What is 479?
784-563
What is 221?
335 rounded to the nearest 10
What is 340?
16+(14+13)=(16+13)+14
What is the Associative Property?
10 friends share 20 cookies equally, so they have ? cookies each.
What is 2 cookies?
1,234+4,321
What is 5,555?
339-147
What is 192?
229 rounded to the nearest 100
What is 200?
(12+2)+20= ?+20
What is 14?
100x1000
What is 100,000?
523+169
What is 692?
853-339
What is 514?
655 rounded to the nearest 100
What is 700?
43+?+11=43+11
What is 0?
You find the area of a shape by ?
What is multiplying lengthxwidth?
399+333
What is 732?
1,228-1,139
What is 89?
950 rounded to the nearest 100
What is 1000?
(39+12)+8= (12+39)+8
What is the Commutative Property?
The length and width of a shape is the same number, so we are talking about a ?
What is a square?